From 0a6b9a36d66e831ccd9e70b99d6d259bd6091bba Mon Sep 17 00:00:00 2001
From: mattijs <mattijs>
Date: Fri, 10 May 2013 16:17:24 +0100
Subject: [PATCH] ENH: OBJstream: add line with normals

---
 src/surfMesh/surfaceFormats/obj/OBJstream.C | 16 +++++++++++++++-
 src/surfMesh/surfaceFormats/obj/OBJstream.H | 12 ++++++++++--
 2 files changed, 25 insertions(+), 3 deletions(-)

diff --git a/src/surfMesh/surfaceFormats/obj/OBJstream.C b/src/surfMesh/surfaceFormats/obj/OBJstream.C
index ce0eb2721b..46a6b7e0c0 100644
--- a/src/surfMesh/surfaceFormats/obj/OBJstream.C
+++ b/src/surfMesh/surfaceFormats/obj/OBJstream.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -241,6 +241,20 @@ Foam::Ostream& Foam::OBJstream::write(const linePointRef& ln)
 }
 
 
+Foam::Ostream& Foam::OBJstream::write
+(
+    const linePointRef& ln,
+    const vector& n0,
+    const vector& n1
+)
+{
+    write(ln.start(), n0);
+    write(ln.end(), n1);
+    write("l ") << nVertices_-1 << ' ' << nVertices_ << nl;
+    return *this;
+}
+
+
 Foam::Ostream& Foam::OBJstream::write
 (
     const triPointRef& f,
diff --git a/src/surfMesh/surfaceFormats/obj/OBJstream.H b/src/surfMesh/surfaceFormats/obj/OBJstream.H
index ec7e93d24e..ee6ae58143 100644
--- a/src/surfMesh/surfaceFormats/obj/OBJstream.H
+++ b/src/surfMesh/surfaceFormats/obj/OBJstream.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2012 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2012-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -92,7 +92,7 @@ public:
 
         // Access
 
-            //- Return the name of the stream
+            //- Return the number of vertices written
             label nVertices() const
             {
                 return nVertices_;
@@ -135,6 +135,14 @@ public:
             //- Write line
             Ostream& write(const linePointRef&);
 
+            //- Write line with points and vector normals ('vn')
+            Ostream& write
+            (
+                const linePointRef&,
+                const vector& n0,
+                const vector& n1
+            );
+
             //- Write triangle as points with lines or filled polygon
             Ostream& write(const triPointRef&, const bool lines = true);